| 摘要 |
PROBLEM TO BE SOLVED: To provide an engineering center hall type load cell using an FBG optimum as a load cell for monitoring a tension of an earth anchor or a lock anchor used frequently in an engineering field. SOLUTION: This load cell is characterized by being equipped with a strain generation part having a hollow cylindrical part having ring-shaped flange parts formed on both ends, for generating strain by a load applied in the axial direction, a strain detection FBG stuck inside a groove for protecting the FBG formed on the circumferential surface of the cylindrical part, and a temperature detection FBG stuck on a board in the strainless state disposed separately from the circumferential surface of the cylindrical part. Hereby, working accuracy of a circumferential wall part can be easily heightened, and the earth anchor or the lock anchor can be set penetratingly through the hollow part, to thereby enable to measure a highly accurate load by detecting uniform and temperature-compensated strain. COPYRIGHT: (C)2004,JPO
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